* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: #f5f7fa;
    color: #333;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 360px;
    height: 360px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.header {
    background: linear-gradient(135deg, #4a6ee0, #6a4de0);
    color: white;
    padding: 16px 20px;
    text-align: center;
    height: 70px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.subtitle {
    font-size: 13px;
    opacity: 0.9;
    font-weight: 400;
}

.content {
    padding: 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.action-btn {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 16px;
    background: white;
    border: 1px solid #e1e5eb;
    border-radius: 6px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    height: 56px;
}

.action-btn:hover {
    background: #f8f9ff;
    border-color: #4a6ee0;
}

.action-btn:active {
    transform: translateY(0);
}

.action-btn:focus {
    outline: none;
    border-color: #4a6ee0;
    box-shadow: 0 0 0 2px rgba(74, 110, 224, 0.2);
}

.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: #f0f3ff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    color: #4a6ee0;
    font-size: 14px;
    font-weight: bold;
    flex-shrink: 0;
}

.btn-content {
    flex: 1;
}

.btn-title {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 2px;
}

.btn-shortcut {
    font-size: 12px;
    color: #6c757d;
    font-weight: 500;
}

.footer {
    padding: 12px 20px;
    border-top: 1px solid #e9ecef;
    text-align: right;
    color: #6c757d;
    font-size: 12px;
    height: 44px;
}

@media (max-width: 400px) {
    .container {
        width: 320px;
        height: 320px;
    }
    
    .header {
        padding: 14px 16px;
        height: 60px;
    }
    
    .content {
        padding: 14px 16px;
    }
    
    .footer {
        padding: 10px 16px;
        height: 40px;
    }
}